I can't find any plugin for this feature.
But I think this should be made available by the core redmine system..

h3. Scenario

We're having different projects for different hardware based embedded system products.
All projects are sub projects of product family project.
Now if a error is reported or a feature request has been made. it's entered in the product family project which is common for all products.

Now later on, the development/management decides that the same ticket/issue should only be worked on in some of sub projects, but not in all sub projects.

Now the problem arise that the error has to be moved/cloned/copied from the root product family project into n different sub product projects.

h3. Feature Idea

Adding in the ticket/issue bulk copy dialog the option to multi select projects.
In the current redmine version 3.2.0 only one project can be selected.

If multiple projects are selected all selected tickets/issues are cloned into all selected projects.

If the make relation check box is checked, all copied tickets/issues get only a relation from the base ticket/issue.